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A magnet with precessing magnetization pumps a spin current into adjacent leads. As a special case of this spin pumping, a precessing macrospin (magnetization) can assist electrons in tunneling. In small systems, however, the Coulomb…

介观与纳米尺度物理 · 物理学 2021-06-09 Tim Ludwig , Rembert A. Duine

We study the dissipation in a system consisting of a small metallic island coupled to a gate electrode and to a massive reservoir via single tunneling junction. The dissipation of energy is caused by a slowly oscillating gate voltage. We…

介观与纳米尺度物理 · 物理学 2015-05-13 Ya. I. Rodionov , I. S. Burmistrov , A. S. Ioselevich

A method for computing the thermopower in interacting systems is proposed. This approach, which relies on Monte Carlo simulations, is illustrated first for a diatomic chain of hard-point elastically colliding particles and then in the case…

统计力学 · 物理学 2015-10-01 Shunda Chen , Jiao Wang , Giulio Casati , Giuliano Benenti

We study the electron transport through a system of two low-capacitance metal islands connected in series between two electrodes. The work is motivated in part by experiments on semiconducting double-dots, which show intriguing effects…

介观与纳米尺度物理 · 物理学 2009-10-31 Teemu Pohjola , Jürgen König , Herbert Schoeller , Gerd Schön

We study the linear conductance of single electron devices showing Coulomb blockade phenomena. Our approach is based on a formally exact path integral representation describing electron tunneling nonperturbatively. The electromagnetic…

介观与纳米尺度物理 · 物理学 2015-06-25 Georg Goeppert , Hermann Grabert

The energy dependence and intensity of Coulomb interaction between quasiparticles in metallic wires is obtained from two different methods: determination of the temperature dependence of the phase coherence time from the magnetoresistance,…

介观与纳米尺度物理 · 物理学 2009-11-10 B. Huard , A. Anthore , F. Pierre , H. Pothier , Norman O. Birge , D. Esteve

Many body trial wave functions are the key ingredient for accurate Quantum Monte Carlo estimates of total electronic energies in many electron systems. In the Coupled Electron-Ion Monte Carlo method, the accuracy of the trial function must…

We study the Coulomb pseudogap for tunneling into the two-dimensional electron system of high-mobility (Al,Ga)As/GaAs heterojunctions subjected to a quantizing magnetic field at filling factor $\nu \leq 1$. Tunnel current-voltage…

介观与纳米尺度物理 · 物理学 2009-10-31 E. V. Deviatov , A. A. Shashkin , V. T. Dolgopolov , W. Hansen , M. Holland

We have analyzed Coulomb drag between currents of interacting electrons in two parallel one-dimensional conductors of finite length $L$ attached to external reservoirs. For strong coupling, the relative fluctuations of electron density in…

凝聚态物理 · 物理学 2009-10-31 Vadim Ponomarenko , Dmitri Averin

Coulomb blockade phenomena and quantum fluctuations are studied in mesoscopic metallic tunnel junctions with high charging energies. If the resistance of the barriers is large compared to the quantum resistance, transport can be described…

凝聚态物理 · 物理学 2009-10-22 Herbert Schoeller , Gerd Schoen

An expansion of energy characteristics of wide thin slab of thickness L in power of 1/L is constructed using the free-electron approximation and the model of a potential well of finite depth. Accuracy of results in each order of the…

介观与纳米尺度物理 · 物理学 2009-11-10 V. V. Pogosov , V. P. Kurbatsky , E. V. Vasyutin

We consider the ground-state energy and the spectrum of the low-energy excitations of a Majorana island formed of topological superconductors connected by a single-mode junction of arbitrary transmission. Coulomb blockade results in…

介观与纳米尺度物理 · 物理学 2019-01-09 Dmitry I. Pikulin , Karsten Flensberg , Leonid I. Glazman , Manuel Houzet , Roman M. Lutchyn

We have used modern supercomputer facilities to carry out extensive numerical simulations of statistical properties of 1D and 2D arrays of single-electron islands with random background charges, in the limit of small island…

无序系统与神经网络 · 物理学 2009-11-10 Daniel M. Kaplan , Victor A. Sverdlov , Konstantin K. Likharev

The analysis of correlation energy of the simplest first approximation of a variational method for the intrashell states of two-electron atoms is the purpose of the present work. This method allows to divide energy of atom on Coulomb and…

原子物理 · 物理学 2008-10-23 V. V. Kavera

We consider effects of Coulomb interaction in a granular normal metal at not very low temperatures suppressing weak localization effects. In this limit calculations with the initial electron Hamiltonian are reduced to integrations over a…

无序系统与神经网络 · 物理学 2009-11-10 K. B. Efetov , A. Tschersich

A full strength Coulomb interaction between trapped electrons can be felt only in absence of a neutralizing background. In order to study quantum degenerate electrons without such a background, an external trap is needed to compensate for…

量子气体 · 物理学 2016-05-23 Ronen Kroeze , Jom Luiten , Servaas Kokkelmans

Characterization of the structural and electron transport properties of single chiral molecules provides critical insights into the interplay between their electronic structure and electrochemical environments, providing broader…

化学物理 · 物理学 2024-09-26 Yueqing Shi , Liya Bi , Zihao Wang , Kangkai Liang , Ji-Kun Li , Xiao-Ye Wang , Wan-Lu Li , Shaowei Li

A discrete charge transfer in a small tunnel junction where Coulomb interactions are important can excite electron-hole pairs near the Fermi level. We use a simple model to study the associated nonequilibrium properties and found two novel…

凝聚态物理 · 物理学 2007-05-23 F. Guinea , M. Ueda

We propose a pseudopotential for the electron-electron Coulomb interaction to improve the efficiency of many-body electronic structure calculations. The pseudopotential accurately replicates the scattering properties of the Coulomb…

强关联电子 · 物理学 2015-09-02 J. H. Lloyd-Williams , R. J. Needs , G. J. Conduit

We estimate the Coulomb energy of static quarks from a Monte Carlo calculation of the correlator of timelike link variables in Coulomb gauge. We find, in agreement with Cucchieri and Zwanziger, that this energy grows linearly with distance…

高能物理 - 格点 · 物理学 2009-11-10 J. Greensite , S. Olejnik